<template>
  <div>
    <!-- 面包屑区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>参数列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <div>
        <!-- 消息提示区域 -->
        <el-alert
          title="注意：只允许为第三级分类设置相关参数"
          type="warning"
          show-icon
        >
        </el-alert>
        <!-- 级联选择器 -->
        <span style="margin-top: 15px">
          选择商品分类：
          <el-cascader
            v-model="selParams"
            :options="paramslist"
            :props="cateProps"
            @change="handleChange"
            expand-trigger="hover"
          ></el-cascader>

          <!-- tab标签页 -->
          <el-tabs v-model="activeName" @tab-click="handleClick">
            <!-- 动态参数 -->
            <el-tab-pane label="动态参数" name="many">
              <el-button
                type="primary"
                size="mini"
                :disabled="isBtnShow"
                @click="addDialogVisible = true"
                >添加参数</el-button
              >
              <!--动态参数table表格 -->
              <el-table :data="manyTableData" border style="width: 100%">
                <!-- 扩展列 -->
                <el-table-column type="expand">
                  <template slot-scope="scope">
                    <el-tag
                      type="success"
                      v-for="(item, i) in scope.row.attr_vals"
                      :key="i"
                      closable
                      @close="handleClose(i, scope.row)"
                      >{{ item }}</el-tag
                    >
                  </template>
                </el-table-column>
                <!-- 表格 -->
                <el-table-column type="index" label="#"> </el-table-column>
                <el-table-column prop="attr_name" label="参数名称">
                </el-table-column>
                <el-table-column prop="name" label="操作">
                  <template slot-scope="scope">
                    <el-button
                      type="primary"
                      size="mini"
                      @click="showEditDialog(scope.row.attr_id)"
                      >修改</el-button
                    >
                    <el-button type="danger" size="mini">删除</el-button>
                  </template>
                </el-table-column>
              </el-table>
            </el-tab-pane>

            <!-- 静态属性 -->
            <el-tab-pane label="静态属性" name="only">
              <el-button
                type="primary"
                size="mini"
                :disabled="isBtnShow"
                @click="editDialogVisible = true"
                >静态属性</el-button
              >
              <!--静态属性table表格 -->
              <el-table :data="onlyTableData" border style="width: 100%">
                <el-table-column type="expand"> </el-table-column>
                <el-table-column type="index" label="#"> </el-table-column>
                <el-table-column prop="attr_name" label="参数名称">
                </el-table-column>
                <el-table-column prop="name" label="操作">
                  <template>
                    <el-button type="primary" size="mini">修改</el-button>
                    <el-button type="danger" size="mini">删除</el-button>
                  </template>
                </el-table-column>
              </el-table>
            </el-tab-pane>
          </el-tabs>
        </span>
      </div>
    </el-card>

    <!-- 添加参数的对话框 -->
    <el-dialog
      :title="'添加' + titleText"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <!-- 添加参数的对话框 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
      >
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="addForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addParams">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改参数的对话框 -->
    <el-dialog
      :title="'修改' + titleText"
      :visible.sync="editDialogVisible"
      width="50%"
    >
      <!-- 添加参数的对话框 -->
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="100px"
      >
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="editForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editParams">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 被激活的页签的名称
      activeName: "many",
      cateProps: {
        value: "cat_id",
        label: "cat_name",
        children: "children",
      },
      paramslist: [],
      selParams: "",
      manyTableData: [],
      onlyTableData: [],
      addDialogVisible: false,
      addForm: {
        attr_name: "",
      },
      addFormRules: {
        attr_name: [
          { required: true, message: "请输入动态参数", trigger: "blur" },
        ],
      },
      editDialogVisible: false,
      editForm: {
        attr_name: "",
      },
      editFormRules: {
        attr_name: [
          { required: true, message: "请输入静态属性", trigger: "blur" },
        ],
      },
    };
  },
  created() {
    this.getParamsList();
  },
  methods: {
    // 点击按钮，展示修改的对话框
    async showEditDialog(attr_id) {
      // 查询当前参数的信息
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes/${attr_id}`,
        {
          params: { attr_sel: this.activeName },
        }
      );

      if (res.meta.status !== 200) {
        return this.$message.error("获取参数信息失败！");
      }

      this.editForm = res.data;
      this.editDialogVisible = true;
    },
    // 点击按钮，修改参数信息
    editParams() {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return;
        const { data: res } = await this.$http.put(
          `categories/${this.cateId}/attributes/${this.editForm.attr_id}`,
          { attr_name: this.editForm.attr_name, attr_sel: this.activeName }
        );

        if (res.meta.status !== 200) {
          return this.$message.error("修改参数失败！");
        }

        this.$message.success("修改参数成功！");
        this.getParamsData();
        this.editDialogVisible = false;
      });
    },
    // 重置表单数据
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
    },
    //   添加动态参数
    addParams() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return;
        const { data: res } = await this.$http.post(
          `categories/${this.cateId}/attributes`,
          {
            attr_name: this.addForm.attr_name,
            attr_sel: this.activeName,
          }
        );

        if (res.meta.status !== 201) {
          return this.$message.error("添加参数失败！");
        }

        this.$message.success("添加参数成功！");
        this.addDialogVisible = false;
        this.getParam();
      });
    },
    //   删除tag
    handleClose() {},
    //   获取参数列表数据
    async getParam() {
      if (this.selParams.length !== 3) {
        return (this.selParams = []);
      }
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes`,
        {
          params: { sel: this.activeName },
        }
      );

      if (res.meta.status !== 200) {
        return this.$message.error("获取参数列表失败！");
      }

      res.data.forEach((item) => {
        if (item.attr_vals !== " ") {
          item.attr_vals = item.attr_vals.split(" ");
        } else {
          item.attr_vals = [];
        }
      });
      if (this.activeName == "many") {
        this.manyTableData = res.data;
      } else {
        this.onlyTableData = res.data;
      }
      console.log(res.data);
    },
    handleClick() {
      this.getParam();
    },
    handleChange() {
      this.getParam();
    },
    //   获取商品分类列表数据
    async getParamsList() {
      const { data: res } = await this.$http.get("categories");
      if (res.meta.status !== 200) {
        return this.$message.error("获取商品分类失败！");
      }

      this.paramslist = res.data;

      console.log(this.paramslist);
    },
  },
  computed: {
    //   标题显示
    titleText() {
      if (this.activeName == "many") {
        return "动态参数";
      } else {
        return "静态属性";
      }
    },
    // 当前选中的三级分类的Id
    cateId() {
      if (this.selParams.length === 3) {
        return this.selParams[2];
      }
      return null;
    },
    isBtnShow() {
      if (this.selParams.length !== 3) {
        return true;
      } else {
        return false;
      }
    },
  },
};
</script>

<style scoped>
</style>